Gemstone



FIG. 1 is a bottom plan view of a crown of a round multi-facetedgemstone showing my design;

FIG. 2 is a front side view of my invention, wherein each view takenfrom the right, left and back sides are identical to the front sideview; and,

FIG. 3 is a top plan view of the invention.

The ornamental design for a gemstone, as shown and described.